Combination square



Jan. 9, 1923.

11,441,931 W. H. KELLEY.

COMBINATION SQUARE. FILED JUNE 9. 1920.

li atented slant it, llfldlllm nrimmnnni rare VITLLTAM H. KELLEY, UTTEGTFTNATT, OHIO AEl STGrFlUR TO FlETlillEt it. 'illl'J'Evll'ER AND AhlNUFl'ETATl-i. TURNER, BUTT-T 01? CINCINNATI, UT-lITUi COMBTTTATTON SQUARE.

Application filed June 9,

1 "u all iii/10m a may concern Be it known that .1. TVIILLIAM; ll. limiter, a citizen. f the United States, residing a Cincinnath in the county of Hamilton and citate of Ohio have invented new and useful improvements in Combination Squares, of which the following is a specification.

The object of the invention is to provide a combined tri-square bevel-sqiuire mitersquare and carpenter-square for the use of iarpenters machinists and other mechanics to minimize the number of tools required in the several kinds of work coming within the range of operations of the mechanic and incidentally to minimize the expense incident to the possession of facilities for performing the varying kinds of worl to be done and the space necessary for the storage of the necessary tools for such work, without incurring any limitation or restriction upon the range or adapt-ability of the tools to the work in hand, and with these objects in view, the invention consists of the construction and combination of parts, the preferred embodiment of which shown in the drawings, wherein Figure 1, is a side view of the tool showing in dotted lines certain possible adjustments of the members.

Figure 2, is a detail sectional transverse view of the stock on the plane indicated .by the line 2-2 of Figure 1.

Figure 3, is a section on the line 3-3 of Fi 'ure 1.

l igure 1., is a perspective view of one end of the stock.

Figure 5, is a similar view of the level or bubble glass.

The instrument comprises essentially the stock 10 carrying a tri-square blade 11 of the ordinary or any preferred form, having the usual graduations, said stock being lonitudinally divided to form fixed and adjustable members 12 and 13 which may also be graduated respectively as indicated, the former being attached fixedly to the trisquare blade and cooperating therewith to form the inner edges of the ordinary trisquare, while the latter is adapted to be secured at any desired adjustment by means of a set screw 14 and is slidably mounted upon the former or fixed member of the stock by means of a dove tailed joint con lean. Serial no. setter.

sisting of the tongue 15 carried, for example, by the adjustable stock 18 and operating in a groove 16 in the stationary or fixed member 12 of the stock.

The adjustable or slidable member of the stock Carries an adjustable blade 17 which is pivotally mounted upon the member 13 by means of a pin 18 fitted with a lock nut 19 said blade being longitudinally slotted as shown at 20 to permit longitudinal adjustment of the blade relative to the stock. Obviously the blade 17 is capable of movement bodily with the adjustable or slidable member of the stock or of independent or slidable movement relative thereto while, when in its adjusted position, it may be locked or tightened by lock nut 18 just as the adjustable or slidable member 13 of the stock may be locked at any desired adjustment by means of the set screw 14. Thus, the relative positions of the blades and stock members may operate to adapt the device to perform the functions of a plurality of independent tools including as above noted, a tri-square a miter-square, a earpenters square and a bevel-square and to provide in addition for the proper posi tioning of the parts thereof. There is arranged a transverse guide 21 one end of the stock and an extended longitudinal guide 22 on the adjustable or slidable member of the stock, said guides coosisting of side grooves as indicated clearly in Fi ures 2, 3 and 4 for the reception of lips 23 formed on a level or a bubble glass holder 2% shown in detail in Figure The bubble glass holder obviously may thus be applied either to the end of the stock the lips 23 thereof in engagement with the guide 21, or applied to the side of the same for movement parallel with the length thereof with said lips in engagement with the guide 22.

It to be noted that both the members 12 and 13 of the stock are slotted longitudinally and that the adjustable blade 17 projects through these slots. Thus it lies 111 the same plane with the blade 11, one end of which is set in the slot of the member 12 at the lower end. The blade 17 can, therefore, be brought into edge contact with the blade 11 to effect arallelism between the two; Thereafter the members 12 and 13 may be adjusted relative to each other and the parallelism of the two blades maintained.

The invention having been described, What is claimed as new and useful is A convertible square having a stock consistingof two relatively adjustable members, the said members being provided with longitudinalslots a blade fixed in the slot 10 of one of the members and an adjustable blade extending through both of said slots.

means for locking the adjustable blade in different angular positions with reference to the stock, and means for locking the an! members of the stock in their various positions of adjustment.

In testimon whereof he uflixes his signature.

lVILLIAM H. iililLLlGl 

